Combined radio loud speaker and phonograph



Feb. 28, 1928. 1,660.996

V N. H, HOLLAND COMBINED RADIO LOUD SPEAKER AND PHONOGRAPH Filed May 1. 1925 Patented Feb. 2a. 1928.

.UNITED' STATES" ,P-AT'ENT 'OFFICE.

NEWMAN HENRY HOLLANP, OF EAST ORALJGE, NEW JERSEY ASSIGNOR TO BELL TEL- EPHONE LABORATORIES, INCORPORATED, 011 NEW YORK, N. Y., A. CORPORATION OF NEW YORK.

COMBINED RADIO LOUD SBEAI IEB AND IPHONOGRAPE.

tenuliaflon filed Kay 1, 1925. Serial No. 21,168.

This invention relates to a-novel arrange ment of a phonograph and a loud speaking telephone receiver element so associated that one amplifying horn serves either the ho- 6 nograph reproducer or the loud spea ing receiver.

An object of this invention is to facilitat'e using the phonograph amplifying horn with either sound reproducing element,

thus securing simplicity, compactness, flexibilit and efficiency in combining a phonogrill) speaking element.

In general this invention comprises a i standard phonograph and a loud speaking telephone receiver located in 'roximity to r'the phonograph tone arm. 1e tone arm ,.'is equipped with a'fitting and valve for alternately connecting-yvi'th either phono- 2" grap r producer or the loud speaking telephone" receiver element and for closing the passage into thetone arm from either sound reproducing elementso that-ionly one sound reproducing element'iias access to the pas- 2 sage leading to the amplifying horn during operation.

In accordance with a specific a plication of this invention, the loud spea in telephone receiver element is located at t e t0p 3 of the phonograph pabinet' and at the side of the turn-table in such a position that the tone arm may be swung into engagement with it and connection established between the latter and the'tone arm and at the, same '35 time cut off the passage from the phonograph reprqdueer.

' Another arrangement consists in mounting the'loud speaking telephone receiver upon the tone arm of the phonograph with suit 4o able valves to cut oil either one or the other of the sound reproducers from the tone arm passage. This arrangement is applicable more particularly where the tone .arm of the phonograh 1s so supported that the ad 45 ditional weig t of the loud speaking tele phone element will not affect the pressure of the stylus on the phonograph record. The association of the various elements employed in this invention results in an arrangement 50 which makes for convenience and elii'ciency of operation since the tone arm can be quickly placed in operative relation witheither of the sound re roducers. 'Means are'provided tocutc o, the passage leading trom and a radio or other type of loud.

the diaphragm of the sound reproducer not in use thus avoiding distortion'which might.

be caused if the diaphragm of the elementnot in use were in direct connection with the tone arm passage.

Referring to the drawings, Fig. 1 is a top view of the phonograph tone arm with side connection and a fixed loud speaking telephone element; Fig. 2 is a side view of the phonograph tone arm with vertical connection and a fixed loud speaking tele )hone element; Fig. 3 is a top view of the p ionograph tone arm having a loud speaking telephone element directly mounted on the arm; and Fig. 4 is a partial end view of the tone arm as shown in Fig. 3.

Similar reference characters designate similar parts in the different views. a

Referring to Fig. 1, designates a small part of the phonograph cabinet, 11 the turn- :table, 12 a record, and 13 the tone arm.on which is regularl mounted the phonograph reproducer 14. he fitting for connecting the loud speaking telephone element with .-'the tone arm. is shown at 15 and consists of 1a valve and. connecting member 16.- The movin part of the valve 16 permits assage from t 1e phonograph reproducer 14 t roughthe tone arm when the member 16 is moved and, held by means ofthe spring 17 in its extpeme right )osition. The direct opening through 16 is s 1own at 18. The second assage through the' valve 16 from the ud speaking telephone element is shown t,19 and commun1cates with the passage the tone arm only when the spring 17-is compressed and 16 moved to its extreme left position. .When in this position, the pas-- sage from the phonograph re roducer 14 through the tone arm 18 cut 0 Theloud speaklng telephone element is shown. at 20 'moun d u on the phonograph cabinet 10 at the si e o the turn-table insuc'h a position that when the tone arm is moved to one side of the record the valve'16 engages and tightly connects withthe outlet 21 from the loud speakertelephone receiver. The tone arm, and the loud speaker are held together by means of the catch or locking and 22-which holds the spring 17 under compression and the valve 16 in such position that the opening 19 leads into the passage in the tone arm. It is obvious thatthe act of swinging the tone arm into opera- .spring 17 forces the valve 16 to the right and automatically disconnects the passage 19 from. the tone arm and places the passage 18 in alignment with the longitudinal passage through the tone arm, thus directly providing communication from the phonograph re producer 1%. through the tone arm. The dot and dash line drawing at the left in Fig. 1 shows the position of the 'valve 16 when the phgnograph reproducer is in operation.

a 2 shows a modified arrangement in which the chief dilference from Fig. 1 con sists in placing valve 16 vertically through the tone arm and mounting the loud speaking telephone element 20 at the side of the turn-table with its opening 21 in a vertical position.- To establish operative relation with the loud-speaking telephone element in "this Iarrangement, the tone arm is moved from the record and the lower end of the valve 16 placed upon the outlet :21 of the loud speaking telephone element. The valve acts the same as explained in connection with 1, the tone arm being allowed to drop when moved to one side of the turntable.

ll liile a catch 22 is shown, it is contemplated that "the valve-16 and spring 17 may be designed so that the weight of the tone arm sutlicient to actuate the valve.

Fi shows another arrangement ih which the loud speaking telephone elementis mounted directly upon the tone arm of the phonograph. A valve COil'lbilltlilOIl is "shown which permits coni'iecting either valve cuts off con'imunication between the itt'vo sound reprodueers. An opening27 in t e valve 24: permits communication between the loud speaking telephone receiver 20 and the tone arm when the goose-neck and valve are moved to the left and rotated to such position that the opening 27 and the passage through the tone arm are in alignment. The pin 28, in the valve member 24, slides in the keyway slot 29 when the loud speaking telephone receiver is moved to the left and it engages in the bend at the left end of this slot to hold the valve opening 27 in alignment with the passage in the tone arm. The pin 28 also holds the valve member 9A in the extreme right position when the phonograph reproducer 14 is placed in operative position. It is obvious that with the valve arrangement above described that either of the sound reproducing elements may be conport openings adapted in different positions of said valve to selectively associate one of said reproducers with the amplifier to the exclusion of the other, means tending normall .hqld said valve in position to as sociate the mechanical reproducer with the amplifier. and means for retaining the valve in its alternate position.

The combination of a sound amplifying ho n, of a tone arm, a mechanically operated reproducer. an electrically operated re-' producer. a tubular valve slidable transversely of the tone arm and provided with port openings adapted in different positions of a id valve to selectivelyassociatc one of the reprmlurers with the tone arm to the exclusion of the other, a spring tending normally to hold the valve in position to associate the mechanical reproducer with the amplifier and locking means on the tone arm and the electrical reproducer for retaining the valve in position to associate the electrical repro- (llll'lfl with the amplifier.

In witness whereof, I hereunto subscribe my name this 28th day of April A. 1)., 1925.

NEWMAN H. HOLLAND. 

